CAJ | 학술논문

采用DMAC/LiCl为溶剂,分别溶解纤维素与氨纶切片 TPU,强烈机械搅拌共混均匀,以蒸馏水为凝固浴制备再生纤维素/TPU 复合膜,用核磁共振1 H NMR分析谱图表征了TPU的结构特征,傅里叶红外光谱(FT-IR)、X射线衍射(XRD)、材料万能拉伸仪对复合膜的结构及强力性能进行了测试,采用 WGT-S透光仪测定了复合膜的透光率,结果表明 TPU 引入纤维素矩阵中,一定程度上破坏了再生纤维素膜的结晶度,大大提高了再生纤维素膜的断裂伸长率,降低了其拉伸强度,当TPU加入量为20％(质量分数),再生纤维素膜的断裂伸长率提高到65％,透光率均保持良好。
채용DMAC/LiCl위용제,분별용해섬유소여안륜절편 TPU,강렬궤계교반공혼균균,이증류수위응고욕제비재생섬유소/TPU 복합막,용핵자공진1 H NMR분석보도표정료TPU적결구특정,부리협홍외광보(FT-IR)、X사선연사(XRD)、재료만능랍신의대복합막적결구급강력성능진행료측시,채용 WGT-S투광의측정료복합막적투광솔,결과표명 TPU 인입섬유소구진중,일정정도상파배료재생섬유소막적결정도,대대제고료재생섬유소막적단렬신장솔,강저료기랍신강도,당TPU가입량위20％(질량분수),재생섬유소막적단렬신장솔제고도65％,투광솔균보지량호。
The regenerated cellulose/TPU blend films were prepared by being dissolved in DMAC/LiCl solvent and coagulated in distilled water.The structure of TPU was characterized by 1 H NMR.The structure of the blend films were characterized by FT-IR and XRD.The tensile property and light transmittance were tested by a universal stretcher and WGT-S transmissometer,respectively.The results indicated that the crystallinity of cellulose was destroyed to some extent by incorporation of TPU.The elongation at break of regenerated cellu-lose was improved by 65% at TPU 20wt%.The regenerated cellulose films maintained high light transmittance.